// ntddvdeo.h

// CTL_CODE(0x0023, 0x11b, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_VIDEO_SET_POWER_MANAGEMENT 0x0023046C
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Windows Driver Kit DDI reference (ni-ntddvdeo-ioctl_video_set_power_management)

IOCTL_VIDEO_SET_POWER_MANAGEMENT IOCTL

Description

This IOCTL is obsolete in Windows 2000 and later, and is no longer supported. A Plug and Play video miniport driver should implement the HwVidSetPowerState function, which provides similar functionality.

Resets the power-consumption level of the adapter to the specified state. As long as the state is VideoPowerOff, the port driver intercepts and fails all IOCTL_VIDEO_XXX requests to the miniport driver until the next IOCTL_VIDEO_SET_POWER_MANAGEMENT request that resets the state to a power-on condition.

Parameters

Major code

Input buffer

The VRP InputBuffer contains the VIDEO_POWER_MANAGEMENT structure, specifying the state to be set.

Input buffer length

Output buffer

None

Output buffer length

Input/output buffer

Input/output buffer length

Status block

The miniport driver does not set the Information member of the STATUS_BLOCK structure.

IOCTL_VIDEO_SET_POWER_MANAGEMENT - NtDoc